Ribosomal proteins that can act as translational repressors:
A. are not encoded by the same mRNA that they repress.
B. bind to a site on the mRNA near the start site of one gene in the operon.
C. bind to mRNA with higher affinity than to the appropriate rRNA molecule.
D. bind to the mRNA when sensing that levels of r-proteinare low relative to rRNA.
B
You might also like to view...
Following the citric acid cycle but before the electron transport chain and oxidative phosphorylation, how much potential energy has been transferred to the bonds of ATP (at 7.3 kcal/mol)? The bonds of NADH (at 53 kcal/mol)?
If glucose oxidation to CO2 and H2O has a G of 676 kcal/mol, what proportion has been captured? Where would you predict the balance of the free energy has gone? What will be an ideal response?
DNA ligase links two __________ DNA fragments by __________ bonds
a. complementary; hydrogen b. circular; covalent c. palindromic; covalent d. linear; covalent e. linear; hydrogen
The symplast:a
greatly increases the surface area of the root. b. is a waterproof band surrounding the endodermis. c. directs the movement of water from one cell's cytoplasm to the next through plasmodesmata. d. secretes suberin, which waterproofs the cells. e. allows nutrient minerals to move against their concentration gradient.
A company was testing a new drug it thought would help decrease the risk of transmission of viruses from mother to fetus. In an experiment to test the compound, an investigator gave 400 pregnant female rats a small dose of the experimental drug and inoculated each with a type of virus known to cause disease in rats. At the same time, 400 other pregnant rats were given only the virus. Of the rat pups born to the females that received both the virus and the drug, 197 showed no symptoms of the disease; 205 rat pups born to the virus-only females showed symptoms. From these data, we can best conclude __________.
Fill in the blank(s) with the appropriate word(s).